package BC84_计算y的值;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        if (x > 0){
            System.out.println(-1);
        }else if (x == 0){
            System.out.println(0);
        }else {
            System.out.println(1);
        }
    }
}
